<!DOCTYPE html>
<html lang="en">
<head>
  <meta charset="UTF-8">
  <meta name="viewport" content="width=device-width, initial-scale=1.0">
  <meta http-equiv="X-UA-Compatible" content="ie=edge">
  <title>throttle 演示</title>
  <style>
  #div1 {
    border: 1px solid #ccc;
    width: 200px;
    height: 100px;
  }
  </style>
</head>
<body>
<div id="div1" draggable="true">可拖拽
</div>

<script src="throttle.js"></script>
</body>
</html>
